GENIIAXE.E. XXV. CAXSCORA. XXVI. VOHIRIA. 



199 



cal, 1-celled, 2-valved. Seeds numerous, small, angular, inserted 

 on the inflexed margins of the valves. Small, erect, simple or 

 branched, annual plants, stems and branches tetragonal. Leaves 

 opposite, decussate, sessile. Flowers terminal or axillary, the 

 terminal ones trichotomous, and the axillary ones solitary. 



1 C. SESSILIFLORA (Schultes, syst. 3. p. 301. Wall. cat. no. 

 4367.) erect; stem and branches 4-sided; angles winged; 

 leaves ovate, sessile, 3-nerved ; flowers solitary, sessile, in the 

 forks of the branches ; capsule sub-cylindrical, nearly as long as 

 the calyx. Q.S. Native of Coromandel and Bengal ; appear- 

 ing in moist pastures, during the rains, and first part of the cool 

 season. Pladera sessiliflora, Roxb. fl. ind. 1. p. 416. E'xacum 

 heteroclitum, Willd. spec. 1. p. 639. Gentiana heteroclita, 

 Lin. syst. p. 270. mant. 560. Centaurium heteroclitum, Borkh. 

 in Roem. arch. 1. p. 28. Chironia brachiata, Willd. herb. 

 Largest leaves an inch long. Flowers small, pale red. Teeth 

 of calyx acute. The 2 upper segments of the corolla oblong. 

 Lobes of stigma obovate, thin. 



Sessile-jiortcred Canscora. PI. J foot. 



2 C. SCHCLTE'SII (Wall. cat. no. 4368.) stem branched from 

 the base, and are, as well as the branches, tetragonally winged ; 

 radical leaves obtuse, few, rosulate ; cauline leaves small, 

 subulate, opposite, scale-formed ; bracteas large, imbricate, 

 ovate, ending in a hair-like point ; calyx large ; flowers sessile, 

 in axils of the braeteas, spicate. . S. Native of the Bur- 

 mese Empire, at Prome. Pladera pulchella, Wall. mss. Flowers 

 beautiful red. This is a very remarkable species, with the habit 

 of a species ofElytraria. 



Schultes's Canscora, PI. 1 foot. 



3 C. DIFFC'SA (R. Br. prod. p. 451.) erect; stem and 

 branches tetragonal, filiform ; lower branches opposite ; upper 

 ones alternate ; leaves ovate-lanceolate, sessile, 3-nerved, acute ; 

 lower ones petiolate ; flowers terminal, somewhat panicled, 

 pedicellate ; calyx tubular, wingless. . S. Native of the 

 East Indies, growing on the banks of water courses, and on low 

 fallow lands. Pladera virgata, Roxb. fl. ind. 1. p. 471. Cham, 

 et Schlecht, in Linnaea, 1. p. 198. Hook. bot. misc. 3. p. 

 89. t. 25. E'xacum diftusum, Willd. spec. 1. p. 637. Gentiana 

 diffusa, Vahl. symb. 3. p. 47. Flemingia vir-ata, Roxb. herb. 

 Pladera muralis, herb. Hamilt. Canscora tenella, Wall. cat. no. 

 4361. E'xacum tenellum, herb. Mad. Centhera of the Tamuls. 

 Flowers small, rose-coloured. The 2 upper segments of the 

 limb of the corolla equal, orbicular ; segments of stigma recurved. 



Diffuse Canscora. Fl. July, Aug. Clt. 1820. PI. 1 to 2 feet. 



4 C. FOLIOSA (D. Don. mss.) stem tetragonal, but not winged ; 

 leaves lanceolate, sessile ; calyx tubular : with elongated, seta- 

 ceous teeth. Q. H. Native of Nipaul, Royle. Stem 3 inches 

 high. Radical leaves large, spreading. 



Leafy Canscora. PI. J foot. 



5 C. DECUSSA'TA (Wall. cat. no. 4364.) erect; stem and 

 branches 4-winged, the latter cross-armed ; leaves ovate-lanceo- 

 late, acute, 3-nerved, sessile ; terminal peduncles, trichotomous ; 

 flowers pedicellate; axillary ones solitary. O- S. Native 

 along with C. diffusa, which it very much resembles ; but is 

 a little more robust, and seldom so high. Pladera decussata, 

 Roxb. fl. ind. 1. p. 418. Flemingia decussata, Roxb. herb. 

 E xacum alatum, Roth. nov. spec. It is called in Bengalese, 

 Dunkuni. Flowers larger than those of C. diffusa, white. Pe- 

 duncles 4-sided, like the stem and branches. Calyx 4-sided, 

 and 4-winged, inflated. Corolla and stamens exactly as in 

 C. diffusa. 



Decussate Canscora. Fl. July, Aug. Clt. 1816. PI. 1 

 foot. 



6 C. PERFOLIA'TA (Lam. diet. 1. p. 601. Wall. cat. no. 4365.) 

 erect ; stem and branches 4-winged ; cauline leaves lanceolate, 

 3-nerved : floral ones, or bracteas, perfoliate ; flowers terminal, 



pedicellate; calyx striated ; capsule oblong. 0.S. Native of 

 India, where it delights in low moist soils. Pladera perfoliata, 

 Roxb. fl. ind 1. p. 418. Kansjan-Cora, Rheed. mal. 10. p. 103. 

 t. 52. Flowers rather large, pale rose-coloured. Corolla sub- 

 bilabiate ; limb of upper lip largest, and deeply 2-parted ; the 

 lower one also consisting of 2 lobes, but smaller. 

 Perforate Canscora. PI. \\ foot. 



7 C. ALA'TA (Roth, ex Wall. cat. no. 4363.) glabrous, erect ; 

 stem and branches tetragonally winged; leaves sessile, 3-5- 

 nerved, ovate-lanceolate, acute ; wings of calyx very broad ; 

 bracteas roundish, peltate, perfoliate under the peduncles and 

 pedicels. G- H. Native of the East Indies. E'xacum alatum, 

 Heyne, herb. Flowers solitary, or by threes. 



JFingfd-calyxed Canscora. PI. 1-2 feet. 



8 C. PUSI'LLA (Schultes, syst. 3. p. 301. Wall. cat. no. 4366.) 

 erect; stem and branches tetragonal, the latter cross-armed; 

 leaves sessile, sub-cordate ; flowers terminal, sessile, by threes, 

 monandrous; corolla hid in the calyx ; capsule globular. Q. 

 S. Native of the coast of Coromandel. Pladera pusflla, Roxb. 

 fl. ind. 1. p. 419. Hopea dichotoma, Vahl. enum. 1. p. 3. 

 E'xacum sessile, Willd. spec. 1. p. 635. Leaves minute. 

 Flowers small, yellow. Calyx sub-cylindrical. Corolla with 

 the tube a little gibbous, and the border 4-toothed. Stamens 4, 

 3 of which bear minute, abortive anthers, the fourth a large, fer- 

 tile one. 



Least Canscora. PI. 1 to 2 inches. 



Cull. For culture and propagation see E'xacum, p. 213. 



XXVI. VOHI'RIA (Voyria is the Guiana name of one of the 

 species.) Juss. gen. 141. Lam. ill. !09. Voyria, Aubl. guian. 

 1. p. 209. t. 83. Lita, Schreb. gen. 1734. 



LIN. SYST. Pent&ndr'ta, Monogynia. Calyx short, turbinate, 

 5-cleft, furnished with 2-3 scales at the base. Corolla salver- 

 shaped, with a long, cylindrical tube, which is tumid at the base 

 and apex, and a 5-cleft limb. Anthers 5, almost sessile, in the 

 throat of the tube of the corolla. Stigma capitate, simple. 

 Capsule oblong, 2-valved, 1-celled ; margins of valves seminife- 

 rous. Seeds scrobiculate. Gregarious plants, parasitical on 

 the decayed roots of trees. Roots composed of thickish, white, 

 fleshy fibres. Stems erect, flexuous, almost leafless, terete, ar- 

 ticulated or nodose ; scaly at the base ; with 2 small, opposite 

 scales at each joint of the stem. 



1 V. ROSEA (Aubl. guian. 1. p. 209. t. 83. f. 1.) flowers twin ; 

 segments of corolla ovate, acute ; tube ventricose at top. y. . S. 

 Native of Guiana, in woods, at the roots of trees. Lam. ill. t. 

 109. Lita rosea, Willd. spec. 1. p. 1017. Root tuberous. Stem 3- 

 4-5 -cleft, with 2 opposite, fleshy, elliptic, acuminated scales at 

 each joint. Corolla rose-coloured. Stem twice bifid. 



7?<we-coloured-flowered Vohiria. Fl. July, Aug. Clt. 1822. 

 PI. i foot. 



2 V. COJRU'LEA (Aubl. guian. 1. p. 211. t. 83. f. 2.) flowers 

 twin ; segments of corolla roundish ; tube dilated at top. % . S. 

 Native of Guiana, in woods, at the roots of trees. Lam. ill. p. 

 491. Lita coarulea, Willd. spec. 1. p. 1071. Scales at the 

 joints of the stem more leaf-like, and more ovate, than in the 

 preceding, and nearly imbricated ; and the segments of the 

 corolla narrower. Flowers purplish, blue. Stem multifid. 



ZJ/Me-flowered Vohiria. PI. foot. 



3 V. SPATHA'CEA (Lam. ill. no. 2249. diet. 8. p. 771.) stem 

 many-flowered ; bracteas sub-spathaceous ; throat of tube fun- 

 nel-shaped ; segments oblong. % . S. Native of Guiana. 

 Lita spathacea, Spreng. syst. 1. p. 581. Nearly allied to I 

 ceerulea. Stems ascending, simple, a little furrowed ; furnished 

 with 2 opposite, ovate, acute, scale-formed leaves at each joint. 

 Flowers terminal, approximate, probably blue. 



